Re: [Discuss-gnuradio] Cross-Compile issue with GNU Radio 3.8: cmake is building an incorrect file

[Toby Flynn]

Marcus,

   The last file differences I sent are in a file created from CMakeLists.txt, lines 74-78.  Swig builds with no issues, it is when I link an OOT that the file _runtime_swig.so cannot be found because the runtime_swigTargets-release.cmake file has the wrong directory location, somehow it lost the variable which allows for a PREFIX, ${_IMPORT_PREFIX}.  Looking at the difference it may be that _IMPORT_PREFIX is not getting set correctly somewhere.  I am still working on this issue.

Toby

On Mon, May 20, 2019 at 11:55 AM Müller, Marcus (CEL) <address@hidden> wrote:

Hi Toby,

I don't really doubt it's a CMake issue; to be precise, I think it's an
issue in the triangle between CMake, CMake instructing SWIG and
detecting the right Python libs along the way.

Anyway, I'll take a minute to literally parse your email :)

Thanks!
Marcus

On Mon, 2019-05-20 at 09:09 -0400, Toby Flynn wrote:
> Marcus,
>    I think what you want to see if the configuration for CMake, the actual build line is fairly normal.  This is the contents of the file which configures CMake.  I believe this is a CMake issue, not a Python issue.   It is only the creation of one .cmake file which leads to OOT building errors.
> Thanks
> Toby
>
> # CMake system name must be something like "Linux".
> # This is important for cross-compiling.
>
> set( CMAKE_SYSTEM_NAME Linux )
> set( CMAKE_SYSTEM_PROCESSOR aarch64 )
> set( CMAKE_C_COMPILER aarch64-poky-linux-gcc )
> set( CMAKE_CXX_COMPILER aarch64-poky-linux-g++ )
> set( CMAKE_ASM_COMPILER aarch64-poky-linux-gcc )
> set( CMAKE_AR aarch64-poky-linux-ar CACHE FILEPATH "Archiver" )
> set( CMAKE_C_FLAGS "  --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot  -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0=/usr/src/debug/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0 -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot= -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot-native=    --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot" CACHE STRING "CFLAGS" )
> set( CMAKE_CXX_FLAGS "  --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot  -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0=/usr/src/debug/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0 -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot= -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot-native=  -fvisibility-inlines-hidden   --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot" CACHE STRING "CXXFLAGS" )
> set( CMAKE_ASM_FLAGS "  --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot  -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0=/usr/src/debug/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0 -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot= -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot-native=    --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot" CACHE STRING "ASM FLAGS" )
> set( CMAKE_C_FLAGS_RELEASE "-DNDEBUG" CACHE STRING "Additional CFLAGS for release" )
> set( CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG" CACHE STRING "Additional CXXFLAGS for release" )
> set( CMAKE_ASM_FLAGS_RELEASE "-DNDEBUG" CACHE STRING "Additional ASM FLAGS for release" )
> set( CMAKE_C_LINK_FLAGS "  --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed" CACHE STRING "LDFLAGS" )
> set( CMAKE_CXX_LINK_FLAGS "  --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot  -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0=/usr/src/debug/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0 -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot= -fdebug-prefix-map=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot-native=  -fvisibility-inlines-hidden   --sysroot=/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed" CACHE STRING "LDFLAGS" )
>
> # only search in the paths provided so cmake doesnt pick
> # up libraries and tools from the native build machine
> set( CMAKE_FIND_ROOT_PATH /home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot /home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot-native    )
> set( CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY )
> set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
> set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
> set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
>
> # Use qt.conf settings
> set( ENV{QT_CONF_PATH} /home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/qt.conf )
>
> # We need to set the rpath to the correct directory as cmake does not provide any
> # directory as rpath by default
> set( CMAKE_INSTALL_RPATH  )
>
> # Use native cmake modules
> list(APPEND CMAKE_MODULE_PATH "/home/builduser/Development/38test/ultra/oe/build/tmp/work/aarch64-poky-linux/gnuradio/3.8.0+gitAUTOINC+72aa97daab-r0/recipe-sysroot/usr/share/cmake/Modules/")
>
> # add for non /usr/lib libdir, e.g. /usr/lib64
> set( CMAKE_LIBRARY_PATH /usr/lib /lib)
>
>
> On Fri, May 17, 2019 at 4:46 PM Müller, Marcus (CEL) <address@hidden> wrote:
> > Hi Toby,
> >
> > what's the verbatim cmake command line Yocto is executing?
> >
> > Since it's impossible for the build system to know by itself what the
> > target python will be, unless you tell it which, we'll have to figure
> > out a way to consistently set Python used during CMake, Python used
> > during build, and Python used on target.
> > It's a complicated thing, actually – the python that the build system
> > internally (a lot!) doesn't have to be the one the used to link SWIG
> > files against.
> > So, I see no way but to set the PYTHON_LIBRARIES and
> > PYTHON_INCLUDE_DIRS explitly in the cmake command line. (If anyone
> > could point me towards an easier solution that doesn't trade project
> > sanity for having one argument fewer in a OE layer, I'd be very happy.)
> >
> > Now, I don't know if all this is related to your problem. But then
> > again, I don't know anything about the OOT module you're trying to
> > build. So far, we don't have overly many 3.8-compatible OOTs, so if you
> > can point us to the one you're working with, that would be highly
> > appreciated. One of the main reasons of breakage is that the old CMake
> > constructs we used to employ in GNU Radio have been replaced by more
> > modern CMake patterns, which especially means that the notion of
> > component dependencies and hence install targets has changed.
> >
> > Best regards,
> > Marcus
> >
> > On Fri, 2019-05-17 at 13:21 -0400, Toby Flynn wrote:
> > > I am attempting to install OOT modules using a Yocto/Openembedded
> > > enviroment and the latest GNURadio 3.8.  This process was working
> > > before the latest cmake changes to 3.8 were incorporated.  I am now
> > > having issues with the cross-complitaion.  I have tracked the issue
> > > down to a file I believe is created by cmake:
> > > build/gnuradio-
> > > runtime/swig/CMakeFiles/Export/lib/cmake/gnuradio/runtime_swigTargets
> > > -release.cmake
> > >
> > > When building directly on a computer this file has difference, line
> > > 10 than the one build using Yocto.
> > > Direct build on a computer the line is:
> > > IMPORTED_LOCATION_RELEASE "${_IMPORT_PREFIX}/lib/python3.6/dist-
> > > packages/gnuradio/gr/_runtime_swig.so"
> > >
> > > On the Yocto build the line is:
> > >
> > > IMPORTED_LOCATION_RELEASE "/usr/lib/python3.5/site-
> > > packages/gnuradio/gr/_runtime_swig.so"
> > >
> > > The missing ${_IMPORT_PREFIX} leads to cmake issues since
> > > _runtime_swig.so cannot be found.
> > >
> > > Does anyone have a suggestion for something I can try to fix the
> > > issue.
> > >
> > > Thanks
> > > Toby
> > >
> > >
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio